Talk:HM Practical - Cardiac Histology

Valves

fold or duplication of the endocardium

two atrioventricular (AV) valves - between the atria and the ventricles, are the mitral valve and the tricuspid valve.
- formed by a fold or duplication of the endocardium with a dense connective tissue core
- upper or atrial surface of the valve is thick and resembles atrial endocardium, and the lower or ventricular surface of the valve is thin and resembles ventricular endocardium.
two semilunar (SL) valves - in the arteries leaving the heart, are the aortic valve and the pulmonary valve (pulmonary artery (trunk) and the aorta)
- endothelium on the cardiac side is squamous. Elastic fibres
- dense fibrous connective tissue core (with some loose connective tissue also evident) and endothelium on either side.